Fix OpenFlow for Wispr Flow app-1.6.288 and disable auto-updater

[OnlyTerp]

Summary

This fixes the GitHub build so it actually patches the installed Wispr Flow app-1.6.288 shell and removes the auto-update path that would otherwise silently replace the patched asar with an unpatched build.

• host.py: find_desktop_exe() now uses newest_app_dir() (version sort) instead of lexicographic sort. Previously it launched app-1.6.7 because "app-1.6.7" sorts after "app-1.6.288" lexicographically, which meant the patched app-1.6.288 asar was ignored.
• patch_asr.py:
  • Processing-timeout regex is now variable-name agnostic so it matches app-1.6.288 minified names.
  • Auto-updater is fully neutered: checkForUpdates, setupListeners, handleDownloadAvailable, and applyUpdate are replaced with no-ops, so the app can never download or install an unpatched Wispr update.
• asar_api.py: updated the required marker for the new processing-timeout value.
• patch_offline_local.py: added exact byte patterns for app-1.6.288 (Qr/$r auth, Wn/$l hub router, Rbe/XI onboarding, Ue supabase flag) and fixed UnicodeEncodeError in print statements.
• rebrand.py: fixed Unicode print chars and added extra rebrand targets: title:"Flow Hub", title:"Flow Status Indicator", document.title="Hub"/"Status", plus a few remaining user-facing "Flow" strings.
• inject.py: added app-1.6.288 hub JS patches for quota CTA, post-onboarding interstitial, and settings tabs; also patches document.title="Hub" to "OpenFlow".

Verification

Tested on the Windows 11 VM against the installed Wispr Flow app-1.6.288:

• python -m openflow patch passes all required marker checks.
• python -m openflow start opens the real Electron app, not the sign-in browser window.
• Window title is OpenFlow; bottom-left shows the Speech Engine selector with Grok / GPT / Claude / Local.
• http://127.0.0.1:18765/ returns JSON: {"ok": true, "brand": "OpenFlow", "message": "OpenFlow STT shim is running...", "desktop_required": true}.

Link to Devin session: https://app.devin.ai/sessions/ecbf46aa308747ef8c4720a5932b6bee
Requested by: @OnlyTerp

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